Thread (8 messages) 8 messages, 2 authors, 2022-12-12
STALE1279d
Revisions (4)
  1. rfc [diff vs current]
  2. v2 [diff vs current]
  3. v3 [diff vs current]
  4. v5 current

[PATCH v5 2/6] uapi/linux/if_tun.h: Added new offload types for USO4/6.

From: Andrew Melnychenko <hidden>
Date: 2022-12-07 11:51:45
Also in: lkml, virtualization
Subsystem: networking drivers, the rest · Maintainers: Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

Added 2 additional offlloads for USO(IPv4 & IPv6).
Separate offloads are required for Windows VM guests,
g.e. Windows may set USO rx only for IPv4.

Signed-off-by: Andrew Melnychenko <redacted>
---
 include/uapi/linux/if_tun.h | 2 ++
 1 file changed, 2 insertions(+)
diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h
index b6d7b868f290..287cdc81c939 100644
--- a/include/uapi/linux/if_tun.h
+++ b/include/uapi/linux/if_tun.h
@@ -90,6 +90,8 @@
 #define TUN_F_TSO6	0x04	/* I can handle TSO for IPv6 packets */
 #define TUN_F_TSO_ECN	0x08	/* I can handle TSO with ECN bits. */
 #define TUN_F_UFO	0x10	/* I can handle UFO packets */
+#define TUN_F_USO4	0x20	/* I can handle USO for IPv4 packets */
+#define TUN_F_USO6	0x40	/* I can handle USO for IPv6 packets */
 
 /* Protocol info prepended to the packets (when IFF_NO_PI is not set) */
 #define TUN_PKT_STRIP	0x0001
-- 
2.38.1
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